Roof mop structure



Aug. 19, 195s w, J, MILLER 2,847,689

ROOF' MOP STRUCTURE Filed March l, 1956 1 N VENTOR ATTORNEY United States Patent O ROOF MOP STRUCTURE William J. Miller, Pittston, Pa. Application March 1, 1956, Serial No. 568,726 3 Claims. (Cl. 15-131) This invention relates Vto a roof mop structure.

The invention is more particularly concerned with a roof mop structure adapted for the application of hot roofing material in the formation of bulit-up roofs.

A primary object of the invention is the provison of a roof mop structure which generally comprises a roofforming material supporting carriage together with a mop and wherein provision is made for automatic feed of the material from the carriage into the mop and which is spread upon the roof by the mop upon movement of the carriage.

While it is appreciated that structures for this general purpose have heretofore been proposed, it is a further object of the present invention to provide a roof mop structure which is more ecient than the said proposed structures.

A still further object of the invention is the provision of a roof mop structure which is relatively simple in construction, durable in use, and eflicient in operation.

Other objects and advantages of the invention will become apparent in the course of the following detailed description, taken in connection with the accompanying drawing, wherein* Fig. 1 is a side elevational view of the improved structure in accordance with a preferred structural embodiment thereof.

Fig. 2 is a top plan view of the structure as observed at right angles to the bottom of the carriage bed.

Referring now in detail to the drawing, the improved structure will be seen to generally comprise a roof material supporting and conveying carriage and a material applying mop 11.

The carriage 10 comprises a wall 12, opposite side walls rear wall 15.

The rear wall is preferably of greater height than the front wall 14 and the side walls 13 are conformed accordingly.

The bed is supported by a pair of laterally opposed wheels 16 mounted on opposite ends of an axle 17 which may be secured to the bottom wall 12 of the carriage bed in any suitable manner.

A suitable handle 19 which is preferably of cylindrical form is disposed rearwardly of the rear wall 15 in spaced parallel relation thereto and which is preferably secured to the rear wall by means of L brackets 20.

A material distributing plate 21 is disposed at the front end of the carriage bed and same is of rectangular form of a length equal to the width of the bed and having a substantial width. The plate is preferably disposed in parallel relation to the bottom wall 12 and may be secured thereto by lapping an edge thereof under the bottom wall as in Fig. l with the utilization of suitable securing means.

The mop 11 is disposed in advance of the plate 21 and such mop is of generally rectangular open form, as is indicated more particularly in Fig. 2. The mop includes a strand holding frame 11a which may be removably bed including a bottom 13, a front wall 14 and a secured to the plate 21 by means of bolts 22 whose head ends are disposed within apertured brackets 23 rigidly secured to the bottom of plate 21.

As in indicated in Fig. 1, the carriage bed in use is downwardly inclined toward the front end thereof and in which position the mop 11 is horizontally disposed with the free edge of plate 21 disposed over the open center thereof.

Means are provided for effecting gravity discharge of the hot roof material from the bed onto the distributing plate 21 in regulatable volumes. Such means preferably comprises a pair of laterally spaced conical valves 24 cooperating with corresponding seats 25 inthe front wall 14.

The valves 24 are normally held in the seats 25 by coil springs 26 whose forward ends engage the valves and whose rear ends engage brackets 27 which project upwardly from and are secured to the bottom wall 12.

The valves are capable of being retracted from their seats to any desired degree by means of rods or cables 28 whose front end portions extend through apertures in the brackets 27, through the springs 26 and thence secured to the valves.

The rods or cables 28 extend rearwardly and pref erably through apertures in the rear wall 15 whereby the ipper edge of the bed is free to receive a cover 29 (Fig.

The rear end portions of the rods or cables extend through apertures 30 in the handle 19 and each thereof is connected to one end of a lever 31 which is pivotall,r connected intermediate its ends to the handle, as at 32, whereby upon pushing inwardly on the longer free ends 32a of the levers, the valves 24 will be retracted from their seats 25 to any desired extent and upon release of the levers the valves 24 will automatically close under the inuence of springs 26.

Since it is desirable to distribute the material on the roof substantially uniformly from one end of the mop 11 to the other end thereof, the plate 21 is provided with a pair of baffles 33 adjacent each valve 24 and the baffles of each pair diverge from the respective valve, as is clearly indicated in Fig. 2. The ends of the baffles adja cent the valves are, however, preferably in slightly spaced relation. The baffles may, if desired, be adjustableby any suitable means whereby their angles of divergence may be varied.

In use the carriage is disposed, as in Fig. 1, and hot roof material is discharged into the interior of the mop 11 and onto the roof R to a depth of about one inch, after which the carriage is moved backward whereby the material is brushed onto the roof.

In rest position the bed bottom wall 12 will be horizontal and the mop 11 in elevated position and in which instance the lower end of leg 18 will engage the roof R.

Having set forth my invention in accordance with a preferred structural embodiment thereof, what I claim and desire to secure by U. S. Letters Patent is:

l. A portable mop structure for applying hot roof forming material, comprising a bed including a bottom wall, opposite side walls and front and rear end walls, a pair of wheels supporting said bed and being rotatable on an axis disposed intermediate said front and rear end walls, an elongated rectangular material distributing plate supported by said bed and projecting forwardly of said front wall and co-extensive in length therewith, an elongated generally rectangular mop supported by said plate with the plate overhanging an edge portion of the mop, at least one pair of spaced bal-lies supported. by said plate and being disposed in diverging relation from adjacent said front wall to the front edge of said plate, a normally closed valve in said front wall for controlled discharge of material from said bed onto said plate adjacent to .and behind the rear ends of said battles, said bed being provided with an elongated handle disposed transversely thereof, and hand engageable means accessible from said handle for opening said valve.

2. The structure according to claim 1, wherein said distributing plate isparallel with4 said bottom wall, a pair of brackets secured to the lower face of said plate, said mop being supported by said plate through the instrumentality of said brackets and bolts extending transversely through said mop each having one end thereof secured to one of said brackets, the said mop being in angular relation to said bottom wal of the bed whereby upon operative position of the mop the bed is inclined for gravity feed of material to said valve,

3. The structure according to claim l, wherein said plate is provided with two pairs of spaced diverging bales and wherein said front wall is provided with a pair of normally closed valves, one for each pair of bafies, said valves each comprising a conical member co-operating with a seat in` said front wall, brackets projecting upwardly from said bottoml wall each having an aperture axially aligned with one of said conical valves,

a spring disposed between each bracket and the corresponding valve for normally holding the same closed, a pair of rods each having one end thereof secured to one of said valves and extending through the respective spring and the aperture in the respective bracket, said rods extending through said bed and said handle, and hand engageable levers pivotally supported by said handle and operatively connected to the rear ends of said rods for manual control of said valves.

References Cited in the file of this patent UNITED STATES PATENTS 995,125 Fitch June 13, 1911 1,139,844 Calnan May 18, 1915 1,424,416 Lipse et al. Aug. 1, 1922 1,563,275 Grabill NOV. 24, 1925 1,770,795 May July 15, 1930 2,042,315 John May 26, 1936 2,432,015 Hodshon Dec. 2, 1947 

